Not bad....
I felt like you could have given the melody a bit more variation, it was a bit repetitive for me. But considering this is your first attempt, its a good effort, there just wasnt anything that made it outstanding for me. The bass needs a little bit more variation as well, in terms of tone and the tune it plays - it also didnt really feel prominent enough underneath the drums.
Overall, though, not a bad first attempt, I look forward to seeing more :)